Dumping vehicle



lum@ 21 s 1927.

'1,633,364 L. DA CARVALHO DUMPING VEHICLE Filed Aug. 20, 1924 3 Sheets-Sheet 1 ENZ' '-99 1,633,364 June 21 1927 L.. DA c. cARvALHo DUMPI NG VEHICLE Filed Aug. 2o, 1924 s sheets-sheet 2 June 21 1927 L. DA C. CARVALHO DUMPING VEHI CLE 3 sheets-sheet 3 Filed Aug. 20, 1924 lll 'iatenzedl .lune 2l,

TTI?

LOUIS DA CSTAUABVALHQ, OF NEW ORLEANS, LOUISIAN.

DUMPING VEHroLE.

applicano inea August sensei.' serial No. resem.

This invention relates to dumping vchicles.

It is the principal object of the invention to 'provide a dumping vehicle that is largely automatic in its dumping operation. More particularly it is an object of the invention to provide a dumping' vehicle that is available for carrying and dumping' staves, logs and the like without the necessity of manu'- ally removing and replacing posts or other load coniners;v one that avoids the weight and expense of hydraulic or similar dumping mechanisms; and one that avoids the necessity of running' the chassis out from beneath the body in dumping.

lWith these general objects in View the invention consists in the combinations, features, details of construction and arrange ments oi. parts that Willirst be described in connection With the accompanying draw-l ings and then more particularly pointed out.-

n the drawings- Fig. l is a View in side elevation, with,

' parte in section, of a dumping vehicle constructed in accordance with the invention; F 2 is a two part top plan view, with parts in section, the one part showingthe body in place and the other part having portions of the body removed;

Fig'. 3 is a top plan View, with parts iny section, of the chassis with the body refr. l is a rear` end View, enlarged;

. 5 is an enlarged sectional View taken broken line 5 5 o'dig. l;

i5 is a similar view taken on the ine (-G ol Fig. 5;

' big. i' is a detail View showing' lpart ol"I the body frame; l

lrig. 8 is a sectional View taken on the line 8-8 of Fig. 7;

Fig. 9 is a view similar' to Fig. 5 but 'with the vehicle body moved to dumping losition just prior to tilting;

Fig. l() is a similar View with the body shown in tilted position;

Fig. il is a detailed perspective View of one track element removed;

Fig. l2 is a similar View of the roller frame; and

Fig. 13 is a similar view, with parts broli'en away and in section, oi" part of the body frame. l

Referring' to the drawings, the invention is illustrated as embodied in a vehicle of the type commonly known as a'motor trncl. lt is to he understood, however, that the invention is applicable to fiat cars, dummies, and other vehicles. The truck illustrated as an example has a chassis comprising;l side beams 15, running Wheels 16 and springs 17, these parts being shown more-or less conventionally. 'The motorie indicated at 18, but the motive and transmission parts are eliminated in order to simplify the drawings, as such parts'may be of any *well known construction. The truck shown, for reasons hereinatter described, is arranged to tilt slightly forward when empty, as illustrated in l.

The invention in its entirety includes a body, i. e. a load container, carried by the chassis and mounted to havev a bodily and tilting'- movement with respect thereto; and a gate on body that is `prevented 'from opening prior to tilting` movement hut is automatically permitted to open, after a given tilting movement, nndcr the Weight of 'the load, and that is automatically closed again upon a reverse tilt of the body. ln vehicles embodying' the invention to what is now considered the oestadvanta e, the gate is pivoted to swingfrom the bo yom and in open position forms a 'ontinuntion of the body floor to :ict as chiitey for the load. l"hile the au'lon'iatic control ot' the grate may be accomplislied in various ways', a convenient construction. embodies a vehicle body havingv two (,li'l'erentially tiltable portions, one carrying?r the pivoted gate and the other carryingstop means to hold the gate closed until such second portion has tilted to ci'- extent than the first portion, thereby to Withdraw the stop means.

Although capable of various constructions, in 'that here illustrated as an example, the tilting body comprises a main traine having outer side bars 2O and inner side bars 2l. Across the :front is cross bar 22. n

alle outer side bars have sockets for receiving the posts E24 or side boards 2.5. A front end board 26 is detachably held in place by a removable locking rod 27 passing through 'the side boards and through clips 28 on the front board. Associated with this main trame is a supplementa'tl frame comprising; two longitudinal beams 29 located `inside the side bars 2l and extending' bach beyond the latter (Fig. 2). The beams have a rear cross bar 3G and at their t' iront ends they Sti of the main framev (Figs. 9 and l0).

In the present embodiment the truck is arranged for endwise dumping and consequently the movement of the truck body is longitudinal of the chassis. As later described, in the embodiment here shown,.the supplemental frame is mounted to roll on the chassis andto tilt after reaching a given position. To give the main frame a differential tilting movement it is pivoted to the supplemental trame. To this end, as shown, passing' through-the beams 29 and connected with the side bars of the main frame is a pivot rod 32. Thus the main frame .can tilt with the supplemental frame and also can have a, separate tilting lInovement relative thereto.

ln view ot the differential movement of the two body portions the floor of the body notched to receive the iront cross bar 22 is 'made in two sections. As shown, a front floor Section is secured by rivets or in other suitable manner to the front part of the main frame. This front door section extends back vto a point adjacent the pivot rod 32. A rear floor section 34 is associated with the supplemental frame but does not extend as far back as beams 29.l The two floor sections are set-close together (Fig. 10) but so as to permit a relative angular movement. 'To prevent leakage, drip, etc., in case the trunk is carrying sand or other semi-fluid loads, a plate 'is located below the joint between the floor sections. This plate is set in rabbeted notches in the beams 29 and has lugs 36 through which pivot rod 32 passes. Supplemental plates 37 are added between the inner and outerside bars. As shown, the rear floor section 34; is riveted to these plates.

ln the present embodiment the gate is car- A ried by the Supplemental frame oi the body and the gat-e stop means is carried by the main frame. To this end, as here shown as an example, pivoted to the 4rear edge olthe floor section 34 by hi'no'es 38 is Aa gate in the form of a tail boar( 39. lin normal, or

running, position the tail board 39 has an.

oblique position as appears in Fig. 5. The side boards 25 terminate in similarly oblique edges so that when-the side boards are used the tailV board cooperates with them to provide a box-like enclosure for ,loads of loose material such as sand. gravel, bricks, etc. Secured to the inner side bars 2l. at the rear ends thereofy are rate stops in the VForm of posts Il() which slant. to the rear Correspoiu'lu ingly with the slant. of the normal position ol the gate 39. These posts, in the normal position of the parts, are received throughout their length by channel members il secured to' the rear face of the tail board or gate 39. lt will he seen that while the posts 410 are in normal position (Figs. 1 and 5) they serve as positive stops or backings for the hinged gate which is thereby held closed. v Until these posts are removed, therefore, the irate cannot open even under the weight of. the load. The gate is permitted to open automatically by the withdrawal ot' the iosts 40 due to a differential movement ot the main frame, v that is, when the main frame tilts beyond the supplemental frame. As

later described, the body is arranged to tilt under the weight ot' the load. During the lirst part ot' this movement, both body portions tilt together. This -continues until the ends ofthe beams 29 strike the ground and stop (Fig. 10) but the main trame, beingl shorter and being independently pivoted, cancontinue its tilting movement. This it does under the weight of the load against the gate which exerts a sort of wiping action against the ends of the stop posts pushing;` them back and so causing` a tilt of the main frame. During this differential movement the ends of posts 40 slide down the channels 4l and so withdraw from gate holding position, thus permitting the gate to open under the weight of the load. The opening movement continues until the gate rests-against the ends of beams 29. ln this positionl (Fig. l0) the gate forms a continuation of the body licor, thereby acting as a chute for the load, and is supported by beams 29 which extend beyond thel gate pivot. The feature of the closing of the gate atteidumping` is described hereinafter.

The invention in its entirety includes amounting for the body by which it may have a bodily movement on the chassis and thereafter may tilt. in structures embodying' the invention to what is considered the best advantage, both v movements and the correspending reverse movements are effected by gravity. Although capable ot various constructions, in that here shown as an example, pivoted to the chassis is a tipping trac-kway comprisingy side channel elements 12%. a trout cross bar 44', and a rear cross barelb. Each channel element has a clip t6 pivotally bolted to the rear end of a short supplemental side bar i7 on the chassis. Riding on the trackway is a rigid roller frame- (Fig. 12) comprising two parallel side, pieces [l5 and two cross braces 49. vllvlounled in the ends ot the lll) side pieces 48 are rods or shafts 5() eac-,lr

ot which carriesl two rollers D1. rlhese rollers are received by the channels ol the trackway to roll therein, the inner wall oli each channel clement l'ieinp; notched, as at 52, in two places toaccommodate the rods 5l). The roller .trame can thus roll back and iorth in the trackway. its movement in either direction beinef limited by the engagement oi rods 5() with the ends ot' notches 52. The roller 'tramo described holds the roller-sbl rigidly in alineinent and the use 0i ball bearings is avoided. y

:in the the embodiment illustrated the 'parts are so arranged that the beams 29 ride on the rollers 51 in the manner of rails so that the body has a rolling movement on the roller frame while the trame is rolling in the trackway. This gives the body a compound bodily movement on the chassis to und from dumping position. lt will be seen that this movement depends on the position of the trackway and there is provided means for controlling this position, thereby to control the body movement. Although capable of various constructions, in the present embodiment, pivoted to each end ot' the front cross bar 44 of the trackway is a link 54. These links are pivoted to bell crank levers 55 mounted'on a rock shaft 56 carried by the chassis. On this rock shaft is rocker arm 57 connected by a link 58 with an operating lever 59' adjaeentthe drivers seat. When lever 59 is moved forward, that is, from the position of Fig. l to the position of Fig. 9, the trackvvay, through the parts just described, is tipped rearwardly on its pivot. With the track thus tipped, the roller frame rolls down the trackway and the body rolls, in addition, on the roller frame, thus giving a compound gravity movement to dumping position. As the position of the track is dependent on the position of lever, and as'the body movement is dependent on the track position, the operator can control, by means ot' the lever, the body movement by controlling' the degree o1 tip otl the track. That is, the lever not only starts the body rolling but can be operated in the nature of a brake lever to control the body movement.

'there is provided means for normally iatching the body against rearward rolling movement, this means being 'releasml upon operation of the control lever 59. As here shown as an example, mounted on the lfront end of the body are two hooks 6l which hook over a rod 62 on 'the chassis. With the hooks in this position (Figs. l and the body is held from rolling movement. rl`he hooks are so designed, however, that they clear the rod when the front end of thc body is elevated with the traekway, upon operation of the lever 59.

in vehicles embodying the invention to the best advantage, the body is arranged to tilt. after its rearward rolling movement, under the weight ot the load to dump the latter, and to tilt reversely by gravity after the load is'removed. To his end, as here shown as an example, on each beam or rail 29 is a clip 625 the forward ends of which are curved (Fig. 13) to correspond with the rollers 51. These clips are so located that when the body has rolled to dumping position the clips engage the rear rollers 5l and can pivot around the latter. That is. the body has a tree pivotal connection with the chassis so that it may tilt under removed, the main body portion, which is pivoied to the beams 29 toward the rear ot' the former. starts to make a reverse tilt by gravity. lt moves alone until the front cross bar 22'engages the notched ends of the beams 29 and thereafter the two portions move together. Thus the body is automatically returned by gravity to untilted position. With the construction described, the gate or tail board 39 is automatically closed upon the reverse tilt of the body. As the main trame makes its dierential reverse tilt the ends of the stop posts 40 ride up the channel elements 4l on the gate and swing the latter closed by a kind of wiping action. By the time themain body portion has reached the end oit its differential movement the posts l0 are back in initial position to hold the gate closed again.

Means is provided for causing the body, alter reversely tilting, to roll back to initial position. rlhis may be conveniently accomplished by reverse'ly tipping the track- Way by means of the operating lever 59. As here shown as an example, bell crank levers are connected by long links 66 with bell cranks 67 mounted on across rod G8 at the rear ot' the chassis. These rear bell cranks are connected by links 69 with the rear cross bar lo of the trackway. When the driver returns lever 5() to normal position, therefore, the trackway is reversely tipped to replace it in initial position in which position it tips slight-ly forward as before described. The roller 'traine and body, there- -fore, roll by gravity, back to initial position. As the body returns to normalv position, the hooks 6l ride up rod 62 and drop into place, thus again latching the body against rearward movement.

There is provided means for preventing Iundue bouncing ot' the body While in running position. As here shown :is an example, adjacent the iront end ol' the body, beams 2 9 carry forwardly facing hooks 70 which hook under pins 7l mounted on the trackway (Fig. l). Similar hooks 72 adjacent the ends of thc beams hook under pins 73 on the trackway. These hooks prevent the truck body from bouncing but are so arranged, as will be apparent trom the drawings, that they auton'iatically clear their pins when the body rolls to dumping` position and automatically return to hooked position on reverse body movement.

To review the operation, lfigs. l and 5 show the truck empty, in running position,

with the body held from rearward rollingl by hooks 61. lVhen the truck is loaded, .preferably with the Weight toward the rear, the depression of the rear springs brings the parts into substantially horizontal position so that only a slight tipping oi the traekway necessary. The ,frate or tail board is held closed by stop posts 4:0. To dump the load the driver moves lever 59 forward. Through thel connections described this elevates the forward end ot' the trackway, hooks 6l clearingr rod 62. The body and roller frame, thus released. roll by gravity to duinpinpr position. Fig'. 9 shows the body in this position just prior to tilting'. Under the weight oli the load` the body tilts rearwai-dlr. thetwo portions moving' together until the beams 29 engage the ground. Thereafter, under the pressure of the load against the gate 89, the main traine oontinues to tilt. this ditlerential movement withdrawing the posts il and permitting the rate to swing open under the Weight of the road. As the gate takes full, open position (Fig. 10) it forms a continuation ot-the body tloor, thus acting as a chute down which the load can slide, the ends of beams 25.? supporting it in this position and servinfr as stops to limit the swinging; movement. llhcn the load is removed, the main body portion tilts reversely by gravity picking;` up the .supplemental frame as the front cross bar Q2 engages the notched ends of beams ifi. so that thereafter both portions tilt together back to horizontal position. During' this reverse tilt the posts 4-.O,'ridin;' up channel elements' 4l, cause the gate 39 to swing baci; to closed position. rlhe driver now returns lever 59 to initial position. Through 'ihn' connections described this reversely tips 'die trachway back to initial position so that the body rolls 'forward again by gravity. 'the parts are now in initial position ready for the next. load.

.lt will be seen that except for the operation of lever 59 the entire duinping ,r operation is automatic.

.lhe bo\l body described is suit-able for loads ot' loose material such as sand. brick and the like.' For logs, staves and similar loads, the side boards` and 'front end board may be removed and the logs or stoves loaded crosswise oi' the body floor. rThe invention prfu'idcs a `particu'arly uselul vehicle 'for @urb loads, as with a. gato pivoted as described vand automatically Controlled. 'the log-.s or slaves can roll or slide ofi' upon dumping. without the necessity of remow ing and reinsertiug end posts and the like. For such loads, the ,grate need not be a complete tail board, posts carrying' channel elements 41 being sufficient.

YVilhat if claim is:

l. in a diunpino` vehicle, and in combination, a chassis, a body having' a pivotal conresetear'.

neetion with the chassis whereby the body may tilt to dump the load, a `rate for nor- 'lor normali y confining' the load,l and stop elements for holding' the gate closed. prior to tilting' ol" the body,l said stop elements being' displaceable, after a given tiltingl of the body, by the weight of the load against the gate, whereby the gate may then open antomatically.

In a dumping vehicle, and in combination, a chassis, a body having a pivotal' connection with the chassis whereby the body may tilt to dump the load, a Swinging' gate pivoted at the bottonifor normally confining the load, and stop elements for holdingthe gate closed prior to tilt-ing of the body, said stop elements beine displaeeable, a'ter a given tilting; ofthe body, by the weight of the load against'the gate, whereby the gate may then open automatically.

fl. ln a dumping: vehicle, and in combination, a chassis, a body having two portions capabloot a differential tilting' movement with respect to the chassis. a gate carried by one portion, and stop means carried by the second portion 'for holding the gate closed prior lo tilting olE the body and displaceable by :i dill'erential tilt oli said second portion, whereby the 1fate may anton'iatically open after tilting 'under the weight ot the load.

lin a dumping' vehicle, and in combination` a chassis, a body having' two portions capable of a differential tilting movement with respect to the chassis, a gate pivoted 4to one portion to swine` about the bottom, posts carried by the second -portion for eiigrziging;f the gate and'holdine it elosedprior to tilting' oi the body, said second portion being differentially tiltable. alter tiitinf,Y et the first portieri, under the weight of the load.

acting' against the Irate, thereby to permit the gate to open automatically.

(i. "in a. dumping vehicle. and in con'il'iination. a chassis, a body having' two portions capable of :1. differential tilting` movement with respect lo the chassis, a. ,g'ate -p'ivoted to one portion. stop means carried by lthe seeond portion lor engaging the grate and holding it closed prior to tilting' ot the body and displaceable by a diaerential tilt o said second portion, said second. portion beine' dil1- 'lorentially tilted, after vtilting' oiz the first portion, under the weight ot the load acting against the gate, thereby to permit the gate lll() noemen to open automatically, said first portion having a part serving as a support for the gate when in open position.

i'. 'ln a. dumping vehicle and in combination7 a chassis, a body comprising a supplemental frame pirolally in'ounted on the chassis and a main iralne pivotally mounted on the supplemental traine, a gate carried by the supplemental traine and pivoied to swing about the bottoni, atop elements carried by the niain frame for holding the gato ciofed prior to tiltingl oi the body, the niain traine bein;r capable oi a dili'erential tilting nioven'ient thereby to displace the stop elements and permit the gate to open under the .vidght ol' the load.

.5. -lua dun'iping vehicle,vand in combination, a chassis, a body comprising a supple nieniial 'f1-aine mounted to tilt with respect to the chassis, and a inain frame mounted to tiltvwith respect to the suiipleinental frame, the suppleinental traine compi-inne) beam elements extending' in the direction oi tilt a substantial distance beyond the niain frame, whereby the main traine can conn tinue to tilt after the supplemental 'frame .f'ugages the ground, a gate pivotally connec-ted with the simplemental traine, and stop posts'carried by the :nain traine and arranged to engage Said grate to hold it closed priez' to differential tilting and to be withdrawn upon dierential tilting to permit the gate to open.

9. In a dumping vehicle, and in combination, a chassis, a body having; a pivotal con'- nection with the chassis whereby the body may tilt to dump the load, a grate for norwally confining the load, and means for holding the gate closed prior to tilting' of the body, said ineens being rendered inoperative by the weight o" the load against the gate after a given tilting ont' the body, whereby the gate may then open automatically and being automatically rendered operativo upon a reverse tilt of the body.

l0.v In a dumping vehicle, and in combination, a chassis, a body having' a pivotal con neetion with the chassis whereby the body may tilt to dump the load, a swinging gato for normally connng the load, and stop elements for holding the gate closed prior 'to tilting of the body, said stop elements being displaceable, alter a given tilting of the body, by the weight of the load against the 4gate, whereby the gate may then open autoniatically and being; automatically returned first portion, under the weight of the load acting against the zgate, the gate being closed by said posts upon a reverse tilt of the body.

lf2. In a dumping vehicle, and in combination, a chassis1 a tiltabletraeliway carried by the chassis and havingtwo side channel elena-Buts, a roller traine coi'uprising,r two shafts, a. pair oi rollers on each oli' said shafts, said roller 'frame being; mounted ou the tiltablo tracltway to have its rollers runnini;- in said channel elements, a body ruoui'itod to roll on said rollers, cooperating elements on the roller traine and body tor perniittiin:v tilting,y of the body after a given rolling movement, and means; 'ior tilting,v said traelcway to permit the roller frame and body to roll by gravity to dumping position.

13. n a dumping' vehicle, and in coxn'bi nation, a chassis, a tracliway pivoted inter mediate its ends to eaid chassis, a body, a roller connection between the body and Said traelfway, a roel: shaft on the chassis below the lorward part oi the traokway, liront bell crank levers on said rook shaft, links con nootinfr Said bell eranlc levers and said trackway, means including an operating' lever for rocking said rock shaft, a cross rod on the chassis below the rear part of the traeliway, roar bell eranlt levers mounted on said cross rod, links connecting one arm of each rear bell crank with the traekway, and linke connecting the other arm of eaeh` rear boli crank with an arm of the corresponding front bell crank. ,i

ln testimony whereof, have hereunto set my hand. l LS DA CSTA CARVALH 

